Frames of exponentials: lower frame bounds for finite subfamilies and approximation of the inverse frame operator
نویسندگان
چکیده
We give lower frame bounds for finite subfamilies of a frame of exponentials {ek}k∈Z in L2(−π, π). We also present a method for approximation of the inverse frame operator corresponding to {ek}k∈Z, where knowledge of the frame bounds for finite subfamilies is crucial.
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